Reed-type spray nozzle



June 15 1926.

' Y 1,589,247 i P. L. SCOTT Y REED TYPE 'SPRAY NOZZLE v Filed Jan.v '7,1926 afyzek 1223777@ A-900%.

l faz/67H50? v Patented June 15, 1926.

UNITED vs 'rivrus 1,589,247 Parri-:NTl OFFICE.

PHILIP LANE SCOTT, OF CHICAGO, ILLINOIS, ASSIGNOR T0 SPERDIESELTRACTORCORPORATION, OF LA PORTE, INDIANA, A CORPORATION OF NEW YORK.

REED-TYPE SPRAY Nozzrin.

Application led January 7, 1926. Serial No. 79,910.

My invention relates to spray nozzles and, particularly to those adaptedfor direct injection of fuel into internal combustion motors where thefuel is injected directly under pressure and without any compressed airor other agents accompanying it, al-

though obviously my spray nozzle may be used wherever it is desirable tospray or atomize or comminute a liquid. y j

- It will be understood that this spray may be used in an engine orelsewhere; that it 1 may be directly injected linto the chamber or placewhere it iis going to be used or it may be Xed as it is injected orproduced or subsequently," with gas or other material, it might, forinstance, be injected into an A ordinary typ`e. of carburetor in which,in

suchcase, the fuel insteadl of being l"sucked into theA air passagewould be injected into it, and of course, any desired modification ofthis might be provided.

The nature of my nozzle is suchthat it is normally held closed and isopened only openmg l1s effected by the mass deformation of one or moreof the parts of which the valve is composed. In lthe particular exampleherewith set forth, I employ a steel valve disc which is deformed by thepressure of the fuel agains it and,

thus allows the fuel to 'be forced into the. combustion chamber o'f themotor.

My invention is illustrated in the accompanying drawings where: v

Figure 1 is a vertical section showing my `valve in place;

Figure 2 is a section on the line 2-2 of Figure 1;

` igure 3 vis a detail section, on an enlarged scale, through a modifiedform of mdevice; a v igure 4 is a lplan view of the valve disc ofFigure3 Wit parts cut away;

Fi re 5'is a similar plan view of a modified orm.

Figure 6 is a section along' the line 6 6 of Figure 5.

Figure 7 is a plan view of one of the two mating spray discs.

Figure 8 is a plan view of a modified reinforcing washer arrangement.'

` Like parts are indicated by like characters in allA the figures.

A is a hollow spray head to which liquid under pressure may be fed'through a pipe by t e direct ressure of the liquid behind 1t k'Ike Pspray head, being seated upon the packing washer B1 by a screw threadedcap B2. BB is an apertured reinforcing washer adapted to support thespray disc or segments. Thev walls of the aperture of said washerappreaching more closely to the line of cleavage between the discs atthe center than elsewhere. This, particular arrangement of thereinforcing washer will be used of course only when the spray or liquidis to pass out through a relatively elongated crack, because under suchconditions it is .necessary to have the. space between the meeting edgesof the discs approximately constant or at least not too widely divergentbetween a maximum and minimum opening.

The modified form shown in Figures l3 and 4;, however, Adispenses withthe reinforcing washer B3 for the purpose of suggesting that under someconditions this washer center and thus a relatively short spray isproduced. It will be understood that this packing disc C is without anyspring action i but it merely serves to limit the point. at

which fiow may take'place and that it may be used with or without theapertured reinforcing Iwasher. l

In Figures 5 and 6, the spring segments yare weakened by thecounter-sunkhole D in Figure 7 This weakened disc is shown w-ithout the overlyingpacking disc, the idea being that when pressure \is put upon the liquidthe spray will pass through only at the point where the weakening hastaken place,.since the resistance to flow is 'greatly diminished at thatpoint. l

Inthe modifiedy form of Figure 8 the reinforcing disc or washer hasacentral circular aperture. In this case the washer might serve both asa reinforcing and as a 'packing or limiting washer' to limit the 1pressure is raised above a certain predeter- -.10 .forced apart topermit liquid to rush out f under mined point, the 'two springplateswill be ressure from between them. If these discs are shown inFigures l and 2' without any support, there might be an irregular sprayaction resultant upon too great a strain on .the\thin -spring discs andthe reinforcing washer which supports them in various ways as indicatedprevents this, equalizes the strain and perhaps in lsome eases limitsthe point at which the ,spray action can take place. v Y

`Under some" conditions it is best to have the spray' pass out onlythrough a very short passage, and to make this possible, I provide thethin plate which rests upon the spring discs and. is perforated toexpose\4 .only a short portion of the crack between the edges of thediscs.

These discs are very sensitive and experi'ence-shows` that by merelyweakening or thinning out' the discs on one side near the -'"''crack,the spray can in this way be localized.

Experience shows under some conditions `it is desirable to have theedges of the discs vactually in Contact. Under other conditions it mightbe desirable to have the discs so positioned that their edges are justoutof contact and even when this is the case experience showsthatperhaps on account of surface tension or capillarity or perhaps for someother reason which we do not need to go into at this time, that droolingor leakage of the liquid will not take place.

' I claim 1. In an injection valve, a com osite valve disc composed 'ofa plurality or seg- 'ments normally tangent.

2. In an injection valve, a com osite valve disc composed of a plurality.ci segments normally tangent,y and additional means for supporting saiddisc.

3. In an injection valve, a composite valve disc composed of a pluralityet segments normally tangent, and additional means for supporting saiddisc, comprising an apertured supporting disc." f"

4. In an injection valve, a com site valve disc composed of a pluralityo .'nor# mally tangent segments, and an apertured supporting disc.therefor and in contactl therewith. v f

5. In an injection valve, the combination of a composite -valve disccomposed of` a plurality of segments normally tangent,

with a supportingcap therefor, having an ing housing, having a liquidcontaining chamber therein, a closure for said chamber comprising aplurality of spring plates arranged in a single plane and means forholding them edge to edge.

7. In a spray nozzle two springplates.

and means for holding them in position in the same plane with theiropposed edges in contact vthroughout their length.

8. A Ispray head comprisin a supporting housing having a liquidcontaining chamber therein, a closure for 'said chamber comprising aplurality of spring plates arranged ina single'plane and means forholding them edge to edge, means adjacent but slightly removed,v from.their opposed edges for supporting said plates.

9. In a spray nozzle, two spring plates and means for holding them inposition in the same plane with their opposed edges in contactthroughout their length, means adjacent but slightly removed from theirop-` posed edges for supporting said plates.

10.In a spray' nozzle, two spring plates arranged with opposed edges incontact and located in the same plane, means for holding theplatesrigidly in position.

l1. In a s ray nozzle, two spring plates f arranged wit opposed edges incontact and located in the same plane, means for holdadapted to containliquid under pressure, a

nozzledisk closing said housing made up of a pluralityl of separatespring velements engaging along their edges and means'for holding themin position.

13. A spray head comprising a'housing adapted nozzle disk closing saidhousing made up of a plurality of separate spring elements engagingalong their edges, means for holding them in position, and means forpositively preventing the discharge of liquid from between said springelements except throughout a short portion of the crack between them. y

14. A spray 4he'ad comprising a housing adapted to contain liquid underpressure, a

nozzle disk closing said housing Vmade upof a plurality of separatespring elements engaging along theiredges, means'for hold-' in g them inposition, and means for positivelyj preventing the discharge of liquidfrom between said spring elements except throughout ashort portion ofthe crack between them, said means comprising an apertured disk restingupon said spring elements.

l5. A spray nozzle comprising twoplates to containfliquid underpressure, a-

ioo

having opposed edges n contact and located in the same plane,'means forholding said plates rigidly in position and a third plate restingagainst them in a parallel lane apertured at a point in line with thejoint between the first two plates.

16. In a spray nozzle, two plates arranged l edge to edge and located inthe same plane',

means for olding said plates rigidly in po- I vl0 sition so that theirabutting edges are in lclose and intimate contact and a plate inengagement'with said'two plates, apertured in line with the jointbetween the first two plates and means for holding all three platesrigidly together at theircommon peripherles.

Signed atChieao, county of Cook and` State `of Illinois, t

is 4th day of January,

PHILIP LANE SCOTT.

